A UFO is an object seen in the sky or landing on Earth which cannot be identified and whichis often believed to be from another planet. UFO is an abbreviation for 'unidentified flying object'.
There has been a surge of UFO sightings in America.
UFO in British English
( sometimes ˈjuːfəʊ)
abbreviation for
unidentified flying object
unidentified flying object in British English
(ˌʌnaɪˈdɛntɪfaɪd ˈflaɪɪŋ ˈɒbdʒɪkt)
noun
an object seen in the sky or landing on earth which cannot be identified and which is often believed to be from another planet
The police were flooded with calls about unidentified flying objects.
▶ USAGE The abbreviation for unidentified flying object is UFO
UFO in American English
(ˌjuˌɛfˈoʊ)
US
nounWord forms: pluralUFOs or UFO's
1.
any of a number of unidentified objects or phenomena frequently reported, esp. since 1947, to have been observed or tracked in the sky and variously explained as being atmospheric phenomena, hallucinations, misperceptions of actual objects, alien spacecraft, etc.
2.
a spacecraft from another planet; flying saucer
Word origin
u(nidentified) f(lying) o(bject)
Examples of 'UFO' in a sentence
UFO
Looming up in the shadows behind Andy's head was the outline of a sleek UFO balanced adroitly on a slender pole.
David Cavanagh MUSIC FOR BOYS (2003)
When he reached Manfred and Diego, they were passing a silvery, saucer-shaped UFO trapped in the frozen wall.
J.E. Bright ICE AGE (2002)
In other languages
UFO
British English: UFO /ˈjuːfəʊ/ ABBREVIATION
A UFO is an object seen in the sky or landing on Earth which cannot be identified and which is often believed to be from another planet. UFO is an abbreviation for `unidentified flying object'.
There has been a surge of UFO sightings in America.
American English: UFO
Arabic: جِسْمٌ طَائِرٌ غَيْرَ مُعَرَّف
Brazilian Portuguese: OVNI objeto voador não identificado
Chinese: 不明飞行物
Croatian: NLO
Czech: UFO
Danish: ufo
Dutch: ufo
European Spanish: OVNI
Finnish: UFO
French: OVNI
German: UFO
Greek: ΑΤΙΑ
Italian: UFO
Japanese: 未確認飛行物体
Korean: 미확인 비행물체
Norwegian: UFO
Polish: UFO
European Portuguese: OVNI objecto voador não identificado